Merge pull request #3185 from pjackson28/lightboxtweaks

Lightbox: Added WAI-ARIA and support for aria-describedby and longdesc
Merge pull request #3192 from pjackson28/carouselfix

Carousel: Fixed JavaScript issues and moved to new plugin template.
Build: Bump gh-pages for silent option

Related to #3125
Merge pull request #3191 from nschonni/v4-bump-gh-pages

Build: Bump gh-pages for silent option
Build: Run full build on travis

Fixes #3125
Merge pull request #3194 from nschonni/v4-fix-3125-with-full-build-on-travis

Build: Run full build on travis
Migrated the equalheights plugin to the new template.
Build: Adjust build chain for Travis/SauceLabs

- Minor description updates and better differentiate internal tasks
- Make the SauceLabs an self contained external task
- Clean up assemble task and add "tests" target for SauceLabs/Mocha
runner
Merge pull request #3196 from pjackson28/movemorepluginstonewtemplate

Migrated the equalheights plugin to the new template.
Merge pull request #3197 from nschonni/v4-travis-sauce-build-cleanup

Build: Adjust build chain for Travis/SauceLabs
Migrated the equalheights plugin to the new template.